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[pulseview.git] / pv / dialogs / connect.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2012-2013 Joel Holdsworth <joel@airwebreathe.org.uk>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
19  */
20
21 #include <cassert>
22
23 #include <libsigrok/libsigrok.h>
24
25 #include "connect.h"
26
27 #include "pv/devicemanager.h"
28 #include "pv/device/device.h"
29
30 extern "C" {
31 /* __STDC_FORMAT_MACROS is required for PRIu64 and friends (in C++). */
32 #define __STDC_FORMAT_MACROS
33 #include <glib.h>
34 #include <libsigrok/libsigrok.h>
35 }
36
37 using std::list;
38 using std::shared_ptr;
39 using std::string;
40
41 extern sr_context *sr_ctx;
42
43 namespace pv {
44 namespace dialogs {
45
46 Connect::Connect(QWidget *parent, pv::DeviceManager &device_manager) :
47         QDialog(parent),
48         _device_manager(device_manager),
49         _layout(this),
50         _form(this),
51         _form_layout(&_form),
52         _drivers(&_form),
53         _serial_device(&_form),
54         _scan_button(tr("Scan for Devices"), this),
55         _device_list(this),
56         _button_box(QDialogButtonBox::Ok | QDialogButtonBox::Cancel,
57                 Qt::Horizontal, this)
58 {
59         setWindowTitle(tr("Connect to Device"));
60
61         connect(&_button_box, SIGNAL(accepted()), this, SLOT(accept()));
62         connect(&_button_box, SIGNAL(rejected()), this, SLOT(reject()));
63
64         populate_drivers();
65         connect(&_drivers, SIGNAL(activated(int)),
66                 this, SLOT(device_selected(int)));
67
68         _form.setLayout(&_form_layout);
69         _form_layout.addRow(tr("Driver"), &_drivers);
70
71         _form_layout.addRow(tr("Serial Port"), &_serial_device);
72
73         unset_connection();
74
75         connect(&_scan_button, SIGNAL(pressed()),
76                 this, SLOT(scan_pressed()));
77
78         setLayout(&_layout);
79         _layout.addWidget(&_form);
80         _layout.addWidget(&_scan_button);
81         _layout.addWidget(&_device_list);
82         _layout.addWidget(&_button_box);
83 }
84
85 shared_ptr<device::Device> Connect::get_selected_device() const
86 {
87         const QListWidgetItem *const item = _device_list.currentItem();
88         if (!item)
89                 return shared_ptr<device::Device>();
90
91         const sr_dev_inst *const sdi = (sr_dev_inst*)item->data(
92                 Qt::UserRole).value<void*>();
93         assert(sdi);
94
95         const auto iter = _device_map.find(sdi);
96         assert(iter != _device_map.end());
97
98         return (*iter).second;
99 }
100
101 void Connect::populate_drivers()
102 {
103         gsize num_opts = 0;
104         const int32_t *hwopts;
105         struct sr_dev_driver **drivers = sr_driver_list();
106         GVariant *gvar_opts;
107
108         for (int i = 0; drivers[i]; ++i) {
109                 /**
110                  * We currently only support devices that can deliver
111                  * samples at a fixed samplerate i.e. oscilloscopes and
112                  * logic analysers.
113                  * @todo Add support for non-monotonic devices i.e. DMMs
114                  * and sensors.
115                  */
116                 bool supported_device = false;
117                 if ((sr_config_list(drivers[i], NULL, NULL,
118                                 SR_CONF_DEVICE_OPTIONS, &gvar_opts) == SR_OK)) {
119                         hwopts = (const int32_t *)g_variant_get_fixed_array(gvar_opts,
120                                         &num_opts, sizeof(int32_t));
121                         for (unsigned int j = 0; j < num_opts; j++)
122                                 if (hwopts[j] == SR_CONF_SAMPLERATE) {
123                                         supported_device = true;
124                                         break;
125                                 }
126                 }
127
128                 if (supported_device)
129                         _drivers.addItem(QString("%1 (%2)").arg(
130                                 drivers[i]->longname).arg(drivers[i]->name),
131                                 qVariantFromValue((void*)drivers[i]));
132         }
133 }
134
135 void Connect::unset_connection()
136 {
137         _device_list.clear();
138         _device_map.clear();
139         _serial_device.hide();
140         _form_layout.labelForField(&_serial_device)->hide();
141         _button_box.button(QDialogButtonBox::Ok)->setDisabled(true);
142 }
143
144 void Connect::set_serial_connection()
145 {
146         _serial_device.show();
147         _form_layout.labelForField(&_serial_device)->show();
148 }
149
150 void Connect::scan_pressed()
151 {
152         _device_list.clear();
153         _device_map.clear();
154
155         const int index = _drivers.currentIndex();
156         if (index == -1)
157                 return;
158
159         sr_dev_driver *const driver = (sr_dev_driver*)_drivers.itemData(
160                 index).value<void*>();
161
162         GSList *drvopts = NULL;
163
164         if (_serial_device.isVisible()) {
165                 sr_config *const src = (sr_config*)g_try_malloc(sizeof(sr_config));
166                 src->key = SR_CONF_CONN;
167                 const QByteArray byteArray = _serial_device.text().toUtf8();
168                 src->data = g_variant_new_string((const gchar*)byteArray.constData());
169                 drvopts = g_slist_append(drvopts, src);
170         }
171
172         const list< shared_ptr<device::Device> > devices =
173                 _device_manager.driver_scan(driver, drvopts);
174
175         g_slist_free_full(drvopts, (GDestroyNotify)free_drvopts);
176
177         for (shared_ptr<device::Device> dev_inst : devices)
178         {
179                 assert(dev_inst);
180                 const sr_dev_inst *const sdi = dev_inst->dev_inst();
181                 assert(sdi);
182
183                 const string title = dev_inst->format_device_title();
184                 QString text = QString::fromUtf8(title.c_str());
185
186                 if (sdi->channels) {
187                         text += QString(" with %1 channels").arg(
188                                 g_slist_length(sdi->channels));
189                 }
190
191                 QListWidgetItem *const item = new QListWidgetItem(text,
192                         &_device_list);
193                 item->setData(Qt::UserRole, qVariantFromValue((void*)sdi));
194                 _device_list.addItem(item);
195                 _device_map[sdi] = dev_inst;
196         }
197
198         _device_list.setCurrentRow(0);
199         _button_box.button(QDialogButtonBox::Ok)->setDisabled(_device_list.count() == 0);
200 }
201
202 void Connect::device_selected(int index)
203 {
204         gsize num_opts = 0;
205         const int32_t *hwopts;
206         GVariant *gvar_list;
207         sr_dev_driver *const driver = (sr_dev_driver*)_drivers.itemData(
208                 index).value<void*>();
209
210         unset_connection();
211
212         if ((sr_config_list(driver, NULL, NULL,
213                                 SR_CONF_SCAN_OPTIONS, &gvar_list) == SR_OK)) {
214                 hwopts = (const int32_t *)g_variant_get_fixed_array(gvar_list,
215                                 &num_opts, sizeof(int32_t));
216
217                 for (unsigned int i = 0; i < num_opts; i++) {
218                         switch(hwopts[i]) {
219                         case SR_CONF_SERIALCOMM:
220                                 set_serial_connection();
221                                 break;
222
223                         default:
224                                 continue;
225                         }
226
227                         break;
228                 }
229                 g_variant_unref(gvar_list);
230         }
231 }
232
233 void Connect::free_drvopts(struct sr_config *src)
234 {
235         g_variant_unref(src->data);
236         g_free(src);
237 }
238
239 } // namespace dialogs
240 } // namespace pv